Set of lights for a Christmas tree



FIG. 1 is a front, top and side perspective view of the set of lights for a Christmas tree embodying the design of the present invention;

FIG. 2 is a front elevtional view thereof;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a set of lights for a Christmas tree, as shown and described. 